1 //===-- llvm/CodeGen/LowLevelType.cpp -------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 /// \file This file implements the more header-heavy bits of the LLT class to 10 /// avoid polluting users' namespaces. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/CodeGen/LowLevelType.h" 15 #include "llvm/IR/DataLayout.h" 16 #include "llvm/IR/DerivedTypes.h" 17 #include "llvm/Support/raw_ostream.h" 18 using namespace llvm; 19 getLLTForType(Type & Ty,const DataLayout & DL)20LLT llvm::getLLTForType(Type &Ty, const DataLayout &DL) { 21 if (auto VTy = dyn_cast<VectorType>(&Ty)) { 22 auto NumElements = VTy->getNumElements(); 23 LLT ScalarTy = getLLTForType(*VTy->getElementType(), DL); 24 if (NumElements == 1) 25 return ScalarTy; 26 return LLT::vector(NumElements, ScalarTy); 27 } 28 29 if (auto PTy = dyn_cast<PointerType>(&Ty)) { 30 unsigned AddrSpace = PTy->getAddressSpace(); 31 return LLT::pointer(AddrSpace, DL.getPointerSizeInBits(AddrSpace)); 32 } 33 34 if (Ty.isSized()) { 35 // Aggregates are no different from real scalars as far as GlobalISel is 36 // concerned. 37 auto SizeInBits = DL.getTypeSizeInBits(&Ty); 38 assert(SizeInBits != 0 && "invalid zero-sized type"); 39 return LLT::scalar(SizeInBits); 40 } 41 42 return LLT(); 43 } 44 getMVTForLLT(LLT Ty)45MVT llvm::getMVTForLLT(LLT Ty) { 46 if (!Ty.isVector()) 47 return MVT::getIntegerVT(Ty.getSizeInBits()); 48 49 return MVT::getVectorVT( 50 MVT::getIntegerVT(Ty.getElementType().getSizeInBits()), 51 Ty.getNumElements()); 52 } 53 getLLTForMVT(MVT Ty)54LLT llvm::getLLTForMVT(MVT Ty) { 55 if (!Ty.isVector()) 56 return LLT::scalar(Ty.getSizeInBits()); 57 58 return LLT::vector(Ty.getVectorNumElements(), 59 Ty.getVectorElementType().getSizeInBits()); 60 } 61